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avr-libc: <avr/interrupt.h>: Interrupts
10/19/09 11:32 AM
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<avr/interrupt.h>: Interrupts
Detailed Description
Note:
This discussion of interrupts was originally taken from Rich Neswold's document. See
Acknowledgments.
Introduction to avr-libc's interrupt handling
It's nearly impossible to find compilers that agree on how to handle interrupt code. Since the C language
tries to stay away from machine dependent details, each compiler writer is forced to design their method of
support.
In the AVR-GCC environment, the vector table is predefined to point to interrupt routines with
predetermined names. By using the appropriate name, your routine will be called when the corresponding
interrupt occurs. The device library provides a set of default interrupt routines, which will get used if you
don't define your own.
Patching into the vector table is only one part of the problem. The compiler uses, by convention, a set of
registers when it's normally executing compiler-generated code. It's important that these registers, as well as
the status register, get saved and restored. The extra code needed to do this is enabled by tagging the
interrupt function with __attribute__((signal)).
These details seem to make interrupt routines a little messy, but all these details are handled by the Interrupt
API. An interrupt routine is defined with ISR(). This macro register and mark the routine as an interrupt
handler for the specified peripheral. The following is an example definition of a handler for the ADC
interrupt.
#include <avr/interrupt.h>
ISR(ADC_vect)
{
// user code here
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
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avr-libc: <avr/interrupt.h>: Interrupts
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}
Refer to the chapter explaining assembler programming for an explanation about interrupt routines written
solely in assembler language.
Catch-all interrupt vector
If an unexpected interrupt occurs (interrupt is enabled and no handler is installed, which usually indicates a
bug), then the default action is to reset the device by jumping to the reset vector. You can override this by
supplying a function named BADISR_vect which should be defined with ISR() as such. (The name
BADISR_vect is actually an alias for __vector_default. The latter must be used inside assembly code in
case <avr/interrupt.h> is not included.)
#include <avr/interrupt.h>
ISR(BADISR_vect)
{
// user code here
}
Nested interrupts
The AVR hardware clears the global interrupt flag in SREG before entering an interrupt vector. Thus,
normally interrupts will remain disabled inside the handler until the handler exits, where the RETI
instruction (that is emitted by the compiler as part of the normal function epilogue for an interrupt handler)
will eventually re-enable further interrupts. For that reason, interrupt handlers normally do not nest. For
most interrupt handlers, this is the desired behaviour, for some it is even required in order to prevent
infinitely recursive interrupts (like UART interrupts, or level-triggered external interrupts). In rare
circumstances though it might be desired to re-enable the global interrupt flag as early as possible in the
interrupt handler, in order to not defer any other interrupt more than absolutely needed. This could be done
using an sei() instruction right at the beginning of the interrupt handler, but this still leaves few instructions
inside the compiler-generated function prologue to run with global interrupts disabled. The compiler can be
instructed to insert an SEI instruction right at the beginning of an interrupt handler by declaring the handler
the following way:
ISR(XXX_vect, ISR_NOBLOCK)
{
...
}
where XXX_vect is the name of a valid interrupt vector for the MCU type in question, as explained below.
Two vectors sharing the same code
In some circumstances, the actions to be taken upon two different interrupts might be completely identical
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
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so a single implementation for the ISR would suffice. For example, pin-change interrupts arriving from two
different ports could logically signal an event that is independent from the actual port (and thus interrupt
vector) where it happened. Sharing interrupt vector code can be accomplished using the ISR_ALIASOF()
attribute to the ISR macro:
ISR(PCINT0_vect)
{
...
// Code to handle the event.
}
ISR(PCINT1_vect, ISR_ALIASOF(PCINT0_vect));
Note:
There is no body to the aliased ISR.
Note that the ISR_ALIASOF() feature requires GCC 4.2 or above (or a patched version of GCC 4.1.x). See
the documentation of the ISR_ALIAS() macro for an implementation which is less elegant but could be
applied to all compiler versions.
Empty interrupt service routines
In rare circumstances, in interrupt vector does not need any code to be implemented at all. The vector must
be declared anyway, so when the interrupt triggers it won't execute the BADISR_vect code (which by
default restarts the application).
This could for example be the case for interrupts that are solely enabled for the purpose of getting the
controller out of sleep_mode().
A handler for such an interrupt vector can be declared using the EMPTY_INTERRUPT() macro:
EMPTY_INTERRUPT(ADC_vect);
Note:
There is no body to this macro.
Manually defined ISRs
In some circumstances, the compiler-generated prologue and epilogue of the ISR might not be optimal for
the job, and a manually defined ISR could be considered particularly to speedup the interrupt handling.
One solution to this could be to implement the entire ISR as manual assembly code in a separate (assembly)
file. See Combining C and assembly source files for an example of how to implement it that way.
Another solution is to still implement the ISR in C language but take over the compiler's job of generating
the prologue and epilogue. This can be done using the ISR_NAKED attribute to the ISR() macro. Note that
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
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the compiler does not generate anything as prologue or epilogue, so the final reti() must be provided by the
actual implementation. SREG must be manually saved if the ISR code modifies it, and the compiler-implied
assumption of __zero_reg__ always being 0 could be wrong (e. g. when interrupting right after of a MUL
instruction).
ISR(TIMER1_OVF_vect, ISR_NAKED)
{
PORTB |= _BV(0); // results in SBI which does not affect SREG
reti();
}
Choosing the vector: Interrupt vector names
The interrupt is chosen by supplying one of the symbols in following table.
There are currently two different styles present for naming the vectors. One form uses names starting with
SIG_, followed by a relatively verbose but arbitrarily chosen name describing the interrupt vector. This has
been the only available style in avr-libc up to version 1.2.x.
Starting with avr-libc version 1.4.0, a second style of interrupt vector names has been added, where a short
phrase for the vector description is followed by _vect. The short phrase matches the vector name as
described in the datasheet of the respective device (and in Atmel's XML files), with spaces replaced by an
underscore and other non-alphanumeric characters dropped. Using the suffix _vect is intented to improve
portability to other C compilers available for the AVR that use a similar naming convention.
The historical naming style might become deprecated in a future release, so it is not recommended for new
projects.
Note:
The ISR() macro cannot really spell-check the argument passed to them. Thus, by misspelling one of
the names below in a call to ISR(), a function will be created that, while possibly being usable as an
interrupt function, is not actually wired into the interrupt vector table. The compiler will generate a
warning if it detects a suspiciously looking name of a ISR() function (i.e. one that after macro
replacement does not start with "__vector_").
Vector name
Old vector name
Description
Applicable for
device
AT90S2333,
AT90S4433,
AT90S4434,
AT90S8535,
AT90PWM216,
AT90PWM2B,
AT90PWM316,
AT90PWM3B,
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
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avr-libc: <avr/interrupt.h>: Interrupts
ADC_vect
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SIG_ADC
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
ADC
Conversion
Complete
AT90PWM3,
AT90PWM2,
AT90PWM1,
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega103,
ATmega128,
ATmega1284P,
ATmega16,
ATmega163,
ATmega165,
ATmega165P,
ATmega168P,
ATmega169,
ATmega169P,
ATmega32,
ATmega323,
ATmega325,
ATmega3250,
ATmega3250P,
ATmega328P,
ATmega329,
ATmega3290,
ATmega3290P,
ATmega48P,
ATmega64,
ATmega645,
ATmega6450,
ATmega649,
ATmega6490,
ATmega8,
ATmega8535,
ATmega88P,
ATmega168,
ATmega48,
ATmega88,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
ATmega324P,
ATmega164P,
ATmega644P,
ATmega644,
ATtiny13, ATtiny15,
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avr-libc: <avr/interrupt.h>: Interrupts
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ATtiny26,
ATtiny43U,
ATtiny48, ATtiny24,
ATtiny44, ATtiny84,
ATtiny45, ATtiny25,
ATtiny85,
ATtiny261,
ATtiny461,
ATtiny861,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
ANALOG_COMP_0_vect
SIG_COMPARATOR0
Analog
Comparator 0
AT90PWM3,
AT90PWM2,
AT90PWM1
ANALOG_COMP_1_vect
SIG_COMPARATOR1
Analog
Comparator 1
AT90PWM3,
AT90PWM2,
AT90PWM1
ANALOG_COMP_2_vect
SIG_COMPARATOR2
Analog
Comparator 2
AT90PWM3,
AT90PWM2,
AT90PWM1
ANALOG_COMP_vect
SIG_COMPARATOR
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
Analog
Comparator
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega103,
ATmega128,
ATmega1284P,
ATmega165,
ATmega165P,
ATmega168P,
ATmega169,
ATmega169P,
ATmega325,
ATmega3250,
ATmega3250P,
ATmega328P,
ATmega329,
ATmega3290,
ATmega3290P,
ATmega48P,
ATmega64,
ATmega645,
ATmega6450,
ATmega649,
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avr-libc: <avr/interrupt.h>: Interrupts
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ATmega6490,
ATmega88P,
ATmega168,
ATmega48,
ATmega88,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
ATmega324P,
ATmega164P,
ATmega644P,
ATmega644,
AT90USB162,
AT90USB82,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
ANA_COMP_vect
SIG_COMPARATOR
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
Analog
Comparator
AT90S1200,
AT90S2313,
AT90S2333,
AT90S4414,
AT90S4433,
AT90S4434,
AT90S8515,
AT90S8535,
ATmega16,
ATmega161,
ATmega162,
ATmega163,
ATmega32,
ATmega323,
ATmega8,
ATmega8515,
ATmega8535,
ATtiny11, ATtiny12,
ATtiny13, ATtiny15,
ATtiny2313,
ATtiny26, ATtiny28,
ATtiny43U,
ATtiny48, ATtiny24,
ATtiny44, ATtiny84,
ATtiny45, ATtiny25,
ATtiny85,
ATtiny261,
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avr-libc: <avr/interrupt.h>: Interrupts
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ATtiny461,
ATtiny861
CAN Transfer
Complete or
Error
AT90CAN128,
AT90CAN32,
AT90CAN64
CANIT_vect
SIG_CAN_INTERRUPT1
EEPROM_READY_vect
SIG_EEPROM_READY,
SIG_EE_READY
ATtiny2313
SIG_EEPROM_READY
AT90S2333,
AT90S4433,
AT90S4434,
AT90S8535,
ATmega16,
ATmega161,
ATmega162,
ATmega163,
ATmega32,
ATmega323,
ATmega8,
ATmega8515,
ATmega8535,
ATtiny12, ATtiny13,
ATtiny15, ATtiny26,
ATtiny43U,
ATtiny48, ATtiny24,
ATtiny44, ATtiny84,
ATtiny45, ATtiny25,
ATtiny85,
ATtiny261,
ATtiny461,
ATtiny861
EE_RDY_vect
EEPROM
Ready
AT90PWM3,
AT90PWM2,
AT90PWM1,
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega103,
ATmega128,
ATmega1284P,
ATmega165,
ATmega165P,
ATmega168P,
ATmega169,
ATmega169P,
ATmega325,
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
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avr-libc: <avr/interrupt.h>: Interrupts
EE_READY_vect
EXT_INT0_vect
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SIG_EEPROM_READY
EEPROM
Ready
SIG_INTERRUPT0
External
Interrupt
Request 0
ATmega3250,
ATmega3250P,
ATmega328P,
ATmega329,
ATmega3290,
ATmega3290P,
ATmega32HVB,
ATmega406,
ATmega48P,
ATmega64,
ATmega645,
ATmega6450,
ATmega649,
ATmega6490,
ATmega88P,
ATmega168,
ATmega48,
ATmega88,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
ATmega324P,
ATmega164P,
ATmega644P,
ATmega644,
ATmega16HVA,
AT90USB162,
AT90USB82,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
ATtiny24, ATtiny44,
ATtiny84
AT90S1200,
AT90S2313,
AT90S2323,
AT90S2333,
AT90S2343,
AT90S4414,
AT90S4433,
AT90S4434,
AT90S8515,
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
Page 9 of 50
avr-libc: <avr/interrupt.h>: Interrupts
INT0_vect
10/19/09 11:32 AM
SIG_INTERRUPT0
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
External
Interrupt 0
AT90S8535,
AT90PWM216,
AT90PWM2B,
AT90PWM316,
AT90PWM3B,
AT90PWM3,
AT90PWM2,
AT90PWM1,
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega103,
ATmega128,
ATmega1284P,
ATmega16,
ATmega161,
ATmega162,
ATmega163,
ATmega165,
ATmega165P,
ATmega168P,
ATmega169,
ATmega169P,
ATmega32,
ATmega323,
ATmega325,
ATmega3250,
ATmega3250P,
ATmega328P,
ATmega329,
ATmega3290,
ATmega3290P,
ATmega32HVB,
ATmega406,
ATmega48P,
ATmega64,
ATmega645,
ATmega6450,
ATmega649,
ATmega6490,
ATmega8,
ATmega8515,
ATmega8535,
ATmega88P,
ATmega168,
ATmega48,
ATmega88,
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ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
ATmega324P,
ATmega164P,
ATmega644P,
ATmega644,
ATmega16HVA,
ATtiny11, ATtiny12,
ATtiny13, ATtiny15,
ATtiny22,
ATtiny2313,
ATtiny26, ATtiny28,
ATtiny43U,
ATtiny48, ATtiny45,
ATtiny25, ATtiny85,
ATtiny261,
ATtiny461,
ATtiny861,
AT90USB162,
AT90USB82,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
AT90S2313,
AT90S2333,
AT90S4414,
AT90S4433,
AT90S4434,
AT90S8515,
AT90S8535,
AT90PWM216,
AT90PWM2B,
AT90PWM316,
AT90PWM3B,
AT90PWM3,
AT90PWM2,
AT90PWM1,
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega103,
ATmega128,
ATmega1284P,
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
Page 11 of 50
avr-libc: <avr/interrupt.h>: Interrupts
INT1_vect
10/19/09 11:32 AM
SIG_INTERRUPT1
External
Interrupt
Request 1
ATmega16,
ATmega161,
ATmega162,
ATmega163,
ATmega168P,
ATmega32,
ATmega323,
ATmega328P,
ATmega32HVB,
ATmega406,
ATmega48P,
ATmega64,
ATmega8,
ATmega8515,
ATmega8535,
ATmega88P,
ATmega168,
ATmega48,
ATmega88,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
ATmega324P,
ATmega164P,
ATmega644P,
ATmega644,
ATmega16HVA,
ATtiny2313,
ATtiny28, ATtiny48,
ATtiny261,
ATtiny461,
ATtiny861,
AT90USB162,
AT90USB82,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
AT90PWM3,
AT90PWM2,
AT90PWM1,
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega103,
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
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avr-libc: <avr/interrupt.h>: Interrupts
INT2_vect
INT3_vect
10/19/09 11:32 AM
SIG_INTERRUPT2
SIG_INTERRUPT3
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
External
Interrupt
Request 2
External
Interrupt
Request 3
ATmega128,
ATmega1284P,
ATmega16,
ATmega161,
ATmega162,
ATmega32,
ATmega323,
ATmega32HVB,
ATmega406,
ATmega64,
ATmega8515,
ATmega8535,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
ATmega324P,
ATmega164P,
ATmega644P,
ATmega644,
ATmega16HVA,
AT90USB162,
AT90USB82,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
AT90PWM3,
AT90PWM2,
AT90PWM1,
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega103,
ATmega128,
ATmega32HVB,
ATmega406,
ATmega64,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
AT90USB162,
AT90USB82,
AT90USB1287,
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AT90USB1286,
AT90USB647,
AT90USB646
INT4_vect
INT5_vect
SIG_INTERRUPT4
SIG_INTERRUPT5
External
Interrupt
Request 4
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega103,
ATmega128,
ATmega64,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
AT90USB162,
AT90USB82,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
External
Interrupt
Request 5
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega103,
ATmega128,
ATmega64,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
AT90USB162,
AT90USB82,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
External
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega103,
ATmega128,
ATmega64,
ATmega640,
ATmega1280,
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avr-libc: <avr/interrupt.h>: Interrupts
INT6_vect
10/19/09 11:32 AM
SIG_INTERRUPT6
Interrupt
Request 6
ATmega1281,
ATmega2560,
ATmega2561,
AT90USB162,
AT90USB82,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
INT7_vect
SIG_INTERRUPT7
External
Interrupt
Request 7
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega103,
ATmega128,
ATmega64,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
AT90USB162,
AT90USB82,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
IO_PINS_vect
SIG_PIN, SIG_PIN_CHANGE
External
Interrupt
Request 0
ATtiny11, ATtiny12,
ATtiny15, ATtiny26
LCD Start of
Frame
ATmega169,
ATmega169P,
ATmega329,
ATmega3290,
ATmega3290P,
ATmega649,
ATmega6490
LCD_vect
SIG_LCD
LOWLEVEL_IO_PINS_vect SIG_PIN
Low-level Input
ATtiny28
on Port B
OVRIT_vect
CAN Timer
Overrun
SIG_CAN_OVERFLOW1
AT90CAN128,
AT90CAN32,
AT90CAN64
ATmega162,
ATmega165,
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
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avr-libc: <avr/interrupt.h>: Interrupts
PCINT0_vect
10/19/09 11:32 AM
SIG_PIN_CHANGE0
Pin Change
Interrupt
Request 0
ATmega165P,
ATmega168P,
ATmega169,
ATmega169P,
ATmega325,
ATmega3250,
ATmega3250P,
ATmega328P,
ATmega329,
ATmega3290,
ATmega3290P,
ATmega32HVB,
ATmega406,
ATmega48P,
ATmega645,
ATmega6450,
ATmega649,
ATmega6490,
ATmega88P,
ATmega168,
ATmega48,
ATmega88,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
ATmega324P,
ATmega164P,
ATmega644P,
ATmega644,
ATtiny13,
ATtiny43U,
ATtiny48, ATtiny24,
ATtiny44, ATtiny84,
ATtiny45, ATtiny25,
ATtiny85,
AT90USB162,
AT90USB82,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
ATmega162,
ATmega165,
ATmega165P,
ATmega168P,
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
Page 16 of 50
avr-libc: <avr/interrupt.h>: Interrupts
PCINT1_vect
PCINT2_vect
10/19/09 11:32 AM
SIG_PIN_CHANGE1
SIG_PIN_CHANGE2
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
Pin Change
Interrupt
Request 1
Pin Change
Interrupt
Request 2
ATmega169,
ATmega169P,
ATmega325,
ATmega3250,
ATmega3250P,
ATmega328P,
ATmega329,
ATmega3290,
ATmega3290P,
ATmega32HVB,
ATmega406,
ATmega48P,
ATmega645,
ATmega6450,
ATmega649,
ATmega6490,
ATmega88P,
ATmega168,
ATmega48,
ATmega88,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
ATmega324P,
ATmega164P,
ATmega644P,
ATmega644,
ATtiny43U,
ATtiny48, ATtiny24,
ATtiny44, ATtiny84,
AT90USB162,
AT90USB82
ATmega3250,
ATmega3250P,
ATmega328P,
ATmega3290,
ATmega3290P,
ATmega48P,
ATmega6450,
ATmega6490,
ATmega88P,
ATmega168,
ATmega48,
ATmega88,
ATmega640,
Page 17 of 50
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ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
ATmega324P,
ATmega164P,
ATmega644P,
ATmega644,
ATtiny48
PCINT3_vect
SIG_PIN_CHANGE3
Pin Change
Interrupt
Request 3
ATmega3250,
ATmega3250P,
ATmega3290,
ATmega3290P,
ATmega6450,
ATmega6490,
ATmega324P,
ATmega164P,
ATmega644P,
ATmega644,
ATtiny48
ATtiny2313,
ATtiny261,
ATtiny461,
ATtiny861
PCINT_vect
SIG_PIN_CHANGE,
SIG_PCINT
PSC0_CAPT_vect
SIG_PSC0_CAPTURE
PSC0 Capture
Event
AT90PWM3,
AT90PWM2,
AT90PWM1
PSC0_EC_vect
SIG_PSC0_END_CYCLE
PSC0 End
Cycle
AT90PWM3,
AT90PWM2,
AT90PWM1
PSC1_CAPT_vect
SIG_PSC1_CAPTURE
PSC1 Capture
Event
AT90PWM3,
AT90PWM2,
AT90PWM1
PSC1_EC_vect
SIG_PSC1_END_CYCLE
PSC1 End
Cycle
AT90PWM3,
AT90PWM2,
AT90PWM1
PSC2_CAPT_vect
SIG_PSC2_CAPTURE
PSC2 Capture
Event
AT90PWM3,
AT90PWM2,
AT90PWM1
PSC2_EC_vect
SIG_PSC2_END_CYCLE
PSC2 End
Cycle
AT90PWM3,
AT90PWM2,
AT90PWM1
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
Page 18 of 50
avr-libc: <avr/interrupt.h>: Interrupts
SPI_STC_vect
10/19/09 11:32 AM
SIG_SPI
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
Serial Transfer
Complete
AT90S2333,
AT90S4414,
AT90S4433,
AT90S4434,
AT90S8515,
AT90S8535,
AT90PWM216,
AT90PWM2B,
AT90PWM316,
AT90PWM3B,
AT90PWM3,
AT90PWM2,
AT90PWM1,
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega103,
ATmega128,
ATmega1284P,
ATmega16,
ATmega161,
ATmega162,
ATmega163,
ATmega165,
ATmega165P,
ATmega168P,
ATmega169,
ATmega169P,
ATmega32,
ATmega323,
ATmega325,
ATmega3250,
ATmega3250P,
ATmega328P,
ATmega329,
ATmega3290,
ATmega3290P,
ATmega32HVB,
ATmega48P,
ATmega64,
ATmega645,
ATmega6450,
ATmega649,
ATmega6490,
ATmega8,
ATmega8515,
ATmega8535,
Page 19 of 50
avr-libc: <avr/interrupt.h>: Interrupts
10/19/09 11:32 AM
ATmega88P,
ATmega168,
ATmega48,
ATmega88,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
ATmega324P,
ATmega164P,
ATmega644P,
ATmega644,
ATmega16HVA,
ATtiny48,
AT90USB162,
AT90USB82,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
SPM_RDY_vect
SIG_SPM_READY
Store Program
Memory Ready
ATmega16,
ATmega162,
ATmega32,
ATmega323,
ATmega8,
ATmega8515,
ATmega8535
AT90PWM3,
AT90PWM2,
AT90PWM1,
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega128,
ATmega1284P,
ATmega165,
ATmega165P,
ATmega168P,
ATmega169,
ATmega169P,
ATmega325,
ATmega3250,
ATmega3250P,
ATmega328P,
ATmega329,
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
Page 20 of 50
avr-libc: <avr/interrupt.h>: Interrupts
10/19/09 11:32 AM
ATmega3290,
ATmega3290P,
ATmega406,
ATmega48P,
ATmega64,
ATmega645,
ATmega6450,
ATmega649,
ATmega6490,
ATmega88P,
ATmega168,
ATmega48,
ATmega88,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
ATmega324P,
ATmega164P,
ATmega644P,
ATmega644,
AT90USB162,
AT90USB82,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
SIG_SPM_READY
Store Program
Memory Read
SIG_OUTPUT_COMPARE0A
ATtiny13,
Timer/Counter ATtiny43U,
Compare Match ATtiny24, ATtiny44,
A
ATtiny84, ATtiny45,
ATtiny25, ATtiny85
SIG_OUTPUT_COMPARE0B
ATtiny13,
Timer/Counter ATtiny43U,
Compare Match ATtiny24, ATtiny44,
B
ATtiny84, ATtiny45,
ATtiny25, ATtiny85
TIM0_OVF_vect
SIG_OVERFLOW0
ATtiny13,
ATtiny43U,
Timer/Counter0
ATtiny24, ATtiny44,
Overflow
ATtiny84, ATtiny45,
ATtiny25, ATtiny85
TIM1_CAPT_vect
SIG_INPUT_CAPTURE1
Timer/Counter1 ATtiny24, ATtiny44,
Capture Event
ATtiny84
SPM_READY_vect
TIM0_COMPA_vect
TIM0_COMPB_vect
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
Page 21 of 50
avr-libc: <avr/interrupt.h>: Interrupts
TIM1_COMPA_vect
TIM1_COMPB_vect
TIM1_OVF_vect
TIMER0_CAPT_vect
TIMER0_COMPA_vect
10/19/09 11:32 AM
SIG_OUTPUT_COMPARE1A
Timer/Counter1 ATtiny24, ATtiny44,
Compare Match ATtiny84, ATtiny45,
A
ATtiny25, ATtiny85
SIG_OUTPUT_COMPARE1B
Timer/Counter1 ATtiny24, ATtiny44,
Compare Match ATtiny84, ATtiny45,
B
ATtiny25, ATtiny85
SIG_OVERFLOW1
ATtiny24, ATtiny44,
Timer/Counter1
ATtiny84, ATtiny45,
Overflow
ATtiny25, ATtiny85
SIG_INPUT_CAPTURE0
ADC
Conversion
Complete
SIG_OUTPUT_COMPARE0A
ATmega168,
ATmega48,
ATmega88,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
ATmega324P,
ATmega164P,
ATmega644P,
TimerCounter0
ATmega644,
Compare Match
ATmega16HVA,
A
ATtiny2313,
ATtiny48,
ATtiny261,
ATtiny461,
ATtiny861,
AT90USB162,
AT90USB82,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
ATtiny261,
ATtiny461,
ATtiny861
AT90PWM3,
AT90PWM2,
AT90PWM1,
ATmega1284P,
ATmega168P,
ATmega328P,
ATmega32HVB,
ATmega48P,
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
Page 22 of 50
avr-libc: <avr/interrupt.h>: Interrupts
TIMER0_COMPB_vect
TIMER0_COMP_A_vect
TIMER0_COMP_vect
10/19/09 11:32 AM
ATmega88P,
ATmega168,
ATmega48,
ATmega88,
ATmega640,
ATmega1280,
ATmega1281,
Timer Counter 0 ATmega2560,
SIG_OUTPUT_COMPARE0B,
Compare Match ATmega2561,
SIG_OUTPUT_COMPARE0_B
B
ATmega324P,
ATmega164P,
ATmega644P,
ATmega644,
ATmega16HVA,
ATtiny2313,
ATtiny48,
ATtiny261,
ATtiny461,
ATtiny861,
AT90USB162,
AT90USB82,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
Timer/Counter0 AT90PWM3,
SIG_OUTPUT_COMPARE0A,
Compare Match AT90PWM2,
SIG_OUTPUT_COMPARE0_A
A
AT90PWM1
SIG_OUTPUT_COMPARE0
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega103,
ATmega128,
ATmega16,
ATmega161,
ATmega162,
ATmega165,
ATmega165P,
ATmega169,
ATmega169P,
ATmega32,
Timer/Counter0
ATmega323,
Compare Match
ATmega325,
ATmega3250,
ATmega3250P,
ATmega329,
Page 23 of 50
avr-libc: <avr/interrupt.h>: Interrupts
10/19/09 11:32 AM
ATmega3290,
ATmega3290P,
ATmega64,
ATmega645,
ATmega6450,
ATmega649,
ATmega6490,
ATmega8515,
ATmega8535
TIMER0_OVF0_vect
SIG_OVERFLOW0
AT90S2313,
Timer/Counter0 AT90S2323,
Overflow
AT90S2343,
ATtiny22, ATtiny26
AT90S1200,
AT90S2333,
AT90S4414,
AT90S4433,
AT90S4434,
AT90S8515,
AT90S8535,
AT90PWM216,
AT90PWM2B,
AT90PWM316,
AT90PWM3B,
AT90PWM3,
AT90PWM2,
AT90PWM1,
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega103,
ATmega128,
ATmega1284P,
ATmega16,
ATmega161,
ATmega162,
ATmega163,
ATmega165,
ATmega165P,
ATmega168P,
ATmega169,
ATmega169P,
ATmega32,
ATmega323,
ATmega325,
ATmega3250,
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
Page 24 of 50
avr-libc: <avr/interrupt.h>: Interrupts
10/19/09 11:32 AM
TIMER0_OVF_vect
SIG_OVERFLOW0
TIMER1_CAPT1_vect
SIG_INPUT_CAPTURE1
ATmega3250P,
ATmega328P,
ATmega329,
ATmega3290,
Timer/Counter0
ATmega3290P,
Overflow
ATmega32HVB,
ATmega48P,
ATmega64,
ATmega645,
ATmega6450,
ATmega649,
ATmega6490,
ATmega8,
ATmega8515,
ATmega8535,
ATmega88P,
ATmega168,
ATmega48,
ATmega88,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
ATmega324P,
ATmega164P,
ATmega644P,
ATmega644,
ATmega16HVA,
ATtiny11, ATtiny12,
ATtiny15,
ATtiny2313,
ATtiny28, ATtiny48,
ATtiny261,
ATtiny461,
ATtiny861,
AT90USB162,
AT90USB82,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
Timer/Counter1
AT90S2313
Capture Event
AT90S2333,
AT90S4414,
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
Page 25 of 50
avr-libc: <avr/interrupt.h>: Interrupts
TIMER1_CAPT_vect
10/19/09 11:32 AM
SIG_INPUT_CAPTURE1
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
Timer/Counter
Capture Event
AT90S4433,
AT90S4434,
AT90S8515,
AT90S8535,
AT90PWM216,
AT90PWM2B,
AT90PWM316,
AT90PWM3B,
AT90PWM3,
AT90PWM2,
AT90PWM1,
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega103,
ATmega128,
ATmega1284P,
ATmega16,
ATmega161,
ATmega162,
ATmega163,
ATmega165,
ATmega165P,
ATmega168P,
ATmega169,
ATmega169P,
ATmega32,
ATmega323,
ATmega325,
ATmega3250,
ATmega3250P,
ATmega328P,
ATmega329,
ATmega3290,
ATmega3290P,
ATmega48P,
ATmega64,
ATmega645,
ATmega6450,
ATmega649,
ATmega6490,
ATmega8,
ATmega8515,
ATmega8535,
ATmega88P,
ATmega168,
ATmega48,
Page 26 of 50
avr-libc: <avr/interrupt.h>: Interrupts
10/19/09 11:32 AM
ATmega88,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
ATmega324P,
ATmega164P,
ATmega644P,
ATmega644,
ATtiny2313,
ATtiny48,
AT90USB162,
AT90USB82,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
TIMER1_CMPA_vect
SIG_OUTPUT_COMPARE1A
Timer/Counter1
Compare Match ATtiny26
1A
TIMER1_CMPB_vect
SIG_OUTPUT_COMPARE1B
Timer/Counter1
Compare Match ATtiny26
1B
TIMER1_COMP1_vect
SIG_OUTPUT_COMPARE1A
Timer/Counter1
AT90S2313
Compare Match
AT90S4414,
AT90S4434,
AT90S8515,
AT90S8535,
AT90PWM216,
AT90PWM2B,
AT90PWM316,
AT90PWM3B,
AT90PWM3,
AT90PWM2,
AT90PWM1,
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega103,
ATmega128,
ATmega1284P,
ATmega16,
ATmega161,
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
Page 27 of 50
avr-libc: <avr/interrupt.h>: Interrupts
TIMER1_COMPA_vect
10/19/09 11:32 AM
SIG_OUTPUT_COMPARE1A
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
ATmega162,
ATmega163,
ATmega165,
ATmega165P,
ATmega168P,
ATmega169,
ATmega169P,
ATmega32,
ATmega323,
ATmega325,
ATmega3250,
ATmega3250P,
ATmega328P,
ATmega329,
ATmega3290,
Timer/Counter1
ATmega3290P,
Compare Match
ATmega32HVB,
A
ATmega48P,
ATmega64,
ATmega645,
ATmega6450,
ATmega649,
ATmega6490,
ATmega8,
ATmega8515,
ATmega8535,
ATmega88P,
ATmega168,
ATmega48,
ATmega88,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
ATmega324P,
ATmega164P,
ATmega644P,
ATmega644,
ATmega16HVA,
ATtiny2313,
ATtiny48,
ATtiny261,
ATtiny461,
ATtiny861,
AT90USB162,
AT90USB82,
Page 28 of 50
avr-libc: <avr/interrupt.h>: Interrupts
10/19/09 11:32 AM
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
TIMER1_COMPB_vect
SIG_OUTPUT_COMPARE1B
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
AT90S4414,
AT90S4434,
AT90S8515,
AT90S8535,
AT90PWM216,
AT90PWM2B,
AT90PWM316,
AT90PWM3B,
AT90PWM3,
AT90PWM2,
AT90PWM1,
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega103,
ATmega128,
ATmega1284P,
ATmega16,
ATmega161,
ATmega162,
ATmega163,
ATmega165,
ATmega165P,
ATmega168P,
ATmega169,
ATmega169P,
ATmega32,
ATmega323,
ATmega325,
ATmega3250,
ATmega3250P,
ATmega328P,
ATmega329,
ATmega3290,
Timer/Counter1
ATmega3290P,
Compare
ATmega32HVB,
MatchB
ATmega48P,
ATmega64,
ATmega645,
ATmega6450,
ATmega649,
ATmega6490,
ATmega8,
Page 29 of 50
avr-libc: <avr/interrupt.h>: Interrupts
10/19/09 11:32 AM
ATmega8515,
ATmega8535,
ATmega88P,
ATmega168,
ATmega48,
ATmega88,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
ATmega324P,
ATmega164P,
ATmega644P,
ATmega644,
ATmega16HVA,
ATtiny2313,
ATtiny48,
ATtiny261,
ATtiny461,
ATtiny861,
AT90USB162,
AT90USB82,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
TIMER1_COMPC_vect
TIMER1_COMPD_vect
SIG_OUTPUT_COMPARE1C
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega128,
ATmega64,
ATmega640,
ATmega1280,
Timer/Counter1
ATmega1281,
Compare Match
ATmega2560,
C
ATmega2561,
AT90USB162,
AT90USB82,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
SIG_OUTPUT_COMPARE0D
Timer/Counter1 ATtiny261,
Compare Match ATtiny461,
D
ATtiny861
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
Page 30 of 50
avr-libc: <avr/interrupt.h>: Interrupts
10/19/09 11:32 AM
TIMER1_COMP_vect
SIG_OUTPUT_COMPARE1A
AT90S2333,
Timer/Counter1
AT90S4433,
Compare Match
ATtiny15
TIMER1_OVF1_vect
SIG_OVERFLOW1
Timer/Counter1 AT90S2313,
Overflow
ATtiny26
TIMER1_OVF_vect
SIG_OVERFLOW1
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
AT90S2333,
AT90S4414,
AT90S4433,
AT90S4434,
AT90S8515,
AT90S8535,
AT90PWM216,
AT90PWM2B,
AT90PWM316,
AT90PWM3B,
AT90PWM3,
AT90PWM2,
AT90PWM1,
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega103,
ATmega128,
ATmega1284P,
ATmega16,
ATmega161,
ATmega162,
ATmega163,
ATmega165,
ATmega165P,
ATmega168P,
ATmega169,
ATmega169P,
ATmega32,
ATmega323,
ATmega325,
ATmega3250,
ATmega3250P,
ATmega328P,
ATmega329,
ATmega3290,
Timer/Counter1
ATmega3290P,
Overflow
ATmega32HVB,
ATmega48P,
ATmega64,
ATmega645,
Page 31 of 50
avr-libc: <avr/interrupt.h>: Interrupts
10/19/09 11:32 AM
ATmega6450,
ATmega649,
ATmega6490,
ATmega8,
ATmega8515,
ATmega8535,
ATmega88P,
ATmega168,
ATmega48,
ATmega88,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
ATmega324P,
ATmega164P,
ATmega644P,
ATmega644,
ATmega16HVA,
ATtiny15,
ATtiny2313,
ATtiny48,
ATtiny261,
ATtiny461,
ATtiny861,
AT90USB162,
AT90USB82,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
TIMER2_COMPA_vect
SIG_OUTPUT_COMPARE2A
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
ATmega168,
ATmega48,
ATmega88,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
Timer/Counter2
ATmega2561,
Compare Match
ATmega324P,
A
ATmega164P,
ATmega644P,
ATmega644,
AT90USB1287,
AT90USB1286,
AT90USB647,
Page 32 of 50
avr-libc: <avr/interrupt.h>: Interrupts
10/19/09 11:32 AM
AT90USB646
TIMER2_COMPB_vect
TIMER2_COMP_vect
SIG_OUTPUT_COMPARE2B
SIG_OUTPUT_COMPARE2
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
ATmega168,
ATmega48,
ATmega88,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
Timer/Counter2
ATmega2561,
Compare Match
ATmega324P,
A
ATmega164P,
ATmega644P,
ATmega644,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
AT90S4434,
AT90S8535,
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega103,
ATmega128,
ATmega16,
ATmega161,
ATmega162,
ATmega163,
ATmega165,
ATmega165P,
ATmega169,
Timer/Counter2 ATmega169P,
Compare Match ATmega32,
ATmega323,
ATmega325,
ATmega3250,
ATmega3250P,
ATmega329,
ATmega3290,
ATmega3290P,
ATmega64,
ATmega645,
ATmega6450,
ATmega649,
ATmega6490,
ATmega8,
Page 33 of 50
avr-libc: <avr/interrupt.h>: Interrupts
10/19/09 11:32 AM
ATmega8535
TIMER2_OVF_vect
SIG_OVERFLOW2
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
AT90S4434,
AT90S8535,
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega103,
ATmega128,
ATmega1284P,
ATmega16,
ATmega161,
ATmega162,
ATmega163,
ATmega165,
ATmega165P,
ATmega168P,
ATmega169,
ATmega169P,
ATmega32,
ATmega323,
ATmega325,
ATmega3250,
ATmega3250P,
ATmega328P,
ATmega329,
ATmega3290,
Timer/Counter2
ATmega3290P,
Overflow
ATmega48P,
ATmega64,
ATmega645,
ATmega6450,
ATmega649,
ATmega6490,
ATmega8,
ATmega8535,
ATmega88P,
ATmega168,
ATmega48,
ATmega88,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
ATmega324P,
ATmega164P,
ATmega644P,
Page 34 of 50
avr-libc: <avr/interrupt.h>: Interrupts
10/19/09 11:32 AM
ATmega644,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
TIMER3_CAPT_vect
TIMER3_COMPA_vect
TIMER3_COMPB_vect
SIG_INPUT_CAPTURE3
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega128,
ATmega1284P,
ATmega162,
ATmega64,
Timer/Counter3 ATmega640,
Capture Event
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
SIG_OUTPUT_COMPARE3A
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega128,
ATmega1284P,
ATmega162,
ATmega64,
Timer/Counter3
ATmega640,
Compare Match
ATmega1280,
A
ATmega1281,
ATmega2560,
ATmega2561,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
SIG_OUTPUT_COMPARE3B
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega128,
ATmega1284P,
ATmega162,
ATmega64,
Timer/Counter3
ATmega640,
Compare Match
Page 35 of 50
avr-libc: <avr/interrupt.h>: Interrupts
TIMER3_COMPB_vect
TIMER3_COMPC_vect
TIMER3_OVF_vect
TIMER4_CAPT_vect
10/19/09 11:32 AM
SIG_OUTPUT_COMPARE3B
Compare Match
ATmega1280,
B
ATmega1281,
ATmega2560,
ATmega2561,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
SIG_OUTPUT_COMPARE3C
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega128,
ATmega64,
ATmega640,
Timer/Counter3
ATmega1280,
Compare Match
ATmega1281,
C
ATmega2560,
ATmega2561,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
SIG_OVERFLOW3
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega128,
ATmega1284P,
ATmega162,
ATmega64,
Timer/Counter3 ATmega640,
Overflow
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
SIG_INPUT_CAPTURE4
ATmega640,
ATmega1280,
Timer/Counter4
ATmega1281,
Capture Event
ATmega2560,
ATmega2561
ATmega640,
Timer/Counter4 ATmega1280,
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
Page 36 of 50
avr-libc: <avr/interrupt.h>: Interrupts
TIMER4_COMPA_vect
TIMER4_COMPB_vect
TIMER4_COMPC_vect
TIMER4_OVF_vect
TIMER5_CAPT_vect
TIMER5_COMPA_vect
TIMER5_COMPB_vect
TIMER5_COMPC_vect
TIMER5_OVF_vect
10/19/09 11:32 AM
SIG_OUTPUT_COMPARE4A
Compare Match ATmega1281,
A
ATmega2560,
ATmega2561
SIG_OUTPUT_COMPARE4B
ATmega640,
Timer/Counter4 ATmega1280,
Compare Match ATmega1281,
B
ATmega2560,
ATmega2561
SIG_OUTPUT_COMPARE4C
ATmega640,
Timer/Counter4 ATmega1280,
Compare Match ATmega1281,
C
ATmega2560,
ATmega2561
SIG_OVERFLOW4
ATmega640,
ATmega1280,
Timer/Counter4
ATmega1281,
Overflow
ATmega2560,
ATmega2561
SIG_INPUT_CAPTURE5
ATmega640,
ATmega1280,
Timer/Counter5
ATmega1281,
Capture Event
ATmega2560,
ATmega2561
SIG_OUTPUT_COMPARE5A
ATmega640,
Timer/Counter5 ATmega1280,
Compare Match ATmega1281,
A
ATmega2560,
ATmega2561
SIG_OUTPUT_COMPARE5B
ATmega640,
Timer/Counter5 ATmega1280,
Compare Match ATmega1281,
B
ATmega2560,
ATmega2561
SIG_OUTPUT_COMPARE5C
ATmega640,
Timer/Counter5 ATmega1280,
Compare Match ATmega1281,
C
ATmega2560,
ATmega2561
SIG_OVERFLOW5
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
ATmega640,
ATmega1280,
Timer/Counter5
ATmega1281,
Overflow
ATmega2560,
Page 37 of 50
avr-libc: <avr/interrupt.h>: Interrupts
10/19/09 11:32 AM
ATmega2561
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega128,
ATmega1284P,
ATmega16,
ATmega163,
ATmega168P,
ATmega32,
ATmega323,
ATmega328P,
ATmega32HVB,
ATmega406,
ATmega48P,
ATmega64,
ATmega8,
ATmega8535,
ATmega88P,
ATmega168,
ATmega48,
ATmega88,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
ATmega324P,
ATmega164P,
ATmega644P,
ATmega644,
ATtiny48,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
TWI_vect
SIG_2WIRE_SERIAL
2-wire Serial
Interface
TXDONE_vect
SIG_TXDONE
Transmission
Done, Bit Timer AT86RF401
Flag 2 Interrupt
TXEMPTY_vect
SIG_TXBE
Transmit Buffer
Empty, Bit
AT86RF401
Itmer Flag 0
Interrupt
UART0_RX_vect
SIG_UART0_RECV
UART0, Rx
Complete
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
ATmega161
Page 38 of 50
avr-libc: <avr/interrupt.h>: Interrupts
10/19/09 11:32 AM
UART0_TX_vect
SIG_UART0_TRANS
UART0, Tx
Complete
ATmega161
UART0_UDRE_vect
SIG_UART0_DATA
UART0 Data
Register Empty
ATmega161
UART1_RX_vect
SIG_UART1_RECV
UART1, Rx
Complete
ATmega161
UART1_TX_vect
SIG_UART1_TRANS
UART1, Tx
Complete
ATmega161
UART1_UDRE_vect
SIG_UART1_DATA
UART1 Data
Register Empty
ATmega161
UART, Rx
Complete
AT90S2313,
AT90S2333,
AT90S4414,
AT90S4433,
AT90S4434,
AT90S8515,
AT90S8535,
ATmega103,
ATmega163,
ATmega8515
UART, Tx
Complete
AT90S2313,
AT90S2333,
AT90S4414,
AT90S4433,
AT90S4434,
AT90S8515,
AT90S8535,
ATmega103,
ATmega163,
ATmega8515
UART_RX_vect
UART_TX_vect
SIG_UART_RECV
SIG_UART_TRANS
UART_UDRE_vect
SIG_UART_DATA
UART Data
Register Empty
AT90S2313,
AT90S2333,
AT90S4414,
AT90S4433,
AT90S4434,
AT90S8515,
AT90S8535,
ATmega103,
ATmega163,
ATmega8515
USART0_RXC_vect
SIG_USART0_RECV
USART0, Rx
Complete
ATmega162
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
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avr-libc: <avr/interrupt.h>: Interrupts
10/19/09 11:32 AM
USART0_RX_vect
SIG_UART0_RECV
USART0, Rx
Complete
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega128,
ATmega1284P,
ATmega165,
ATmega165P,
ATmega169,
ATmega169P,
ATmega325,
ATmega329,
ATmega64,
ATmega645,
ATmega649,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
ATmega324P,
ATmega164P,
ATmega644P,
ATmega644
USART0_TXC_vect
SIG_USART0_TRANS
USART0, Tx
Complete
ATmega162
USART0_TX_vect
SIG_UART0_TRANS
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
USART0, Tx
Complete
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega128,
ATmega1284P,
ATmega165,
ATmega165P,
ATmega169,
ATmega169P,
ATmega325,
ATmega3250,
ATmega3250P,
ATmega329,
ATmega3290,
ATmega3290P,
ATmega64,
ATmega645,
ATmega6450,
ATmega649,
ATmega6490,
ATmega640,
Page 40 of 50
avr-libc: <avr/interrupt.h>: Interrupts
10/19/09 11:32 AM
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
ATmega324P,
ATmega164P,
ATmega644P,
ATmega644
USART0_UDRE_vect
SIG_UART0_DATA
USART0 Data
Register Empty
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega128,
ATmega1284P,
ATmega162,
ATmega165,
ATmega165P,
ATmega169,
ATmega169P,
ATmega325,
ATmega329,
ATmega64,
ATmega645,
ATmega649,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
ATmega324P,
ATmega164P,
ATmega644P,
ATmega644
USART1_RXC_vect
SIG_USART1_RECV
USART1, Rx
Complete
ATmega162
USART1_RX_vect
SIG_UART1_RECV
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
USART1, Rx
Complete
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega128,
ATmega1284P,
ATmega64,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
Page 41 of 50
avr-libc: <avr/interrupt.h>: Interrupts
10/19/09 11:32 AM
Complete
USART1_TXC_vect
USART1_TX_vect
USART1_UDRE_vect
SIG_USART1_TRANS
SIG_UART1_TRANS
SIG_UART1_DATA
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
ATmega324P,
ATmega164P,
ATmega644P,
ATmega644,
AT90USB162,
AT90USB82,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
USART1, Tx
Complete
ATmega162
USART1, Tx
Complete
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega128,
ATmega1284P,
ATmega64,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
ATmega324P,
ATmega164P,
ATmega644P,
ATmega644,
AT90USB162,
AT90USB82,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
USART1, Data
Register Empty
AT90CAN128,
AT90CAN32,
AT90CAN64,
ATmega128,
ATmega1284P,
ATmega162,
ATmega64,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
Page 42 of 50
avr-libc: <avr/interrupt.h>: Interrupts
10/19/09 11:32 AM
ATmega324P,
ATmega164P,
ATmega644P,
ATmega644,
AT90USB162,
AT90USB82,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
USART2_RX_vect
USART2_TX_vect
USART2_UDRE_vect
USART3_RX_vect
USART3_TX_vect
USART3_UDRE_vect
USART_RXC_vect
SIG_USART2_RECV
SIG_USART2_TRANS
SIG_USART2_DATA
SIG_USART3_RECV
SIG_USART3_TRANS
SIG_USART3_DATA
SIG_USART_RECV,
SIG_UART_RECV
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
USART2, Rx
Complete
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561
USART2, Tx
Complete
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561
USART2 Data
register Empty
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561
USART3, Rx
Complete
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561
USART3, Tx
Complete
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561
USART3 Data
register Empty
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561
USART, Rx
Complete
ATmega16,
ATmega32,
ATmega323,
Page 43 of 50
avr-libc: <avr/interrupt.h>: Interrupts
10/19/09 11:32 AM
ATmega8
USART_RX_vect
SIG_USART_RECV,
SIG_UART_RECV
USART, Rx
Complete
AT90PWM3,
AT90PWM2,
AT90PWM1,
ATmega168P,
ATmega3250,
ATmega3250P,
ATmega328P,
ATmega3290,
ATmega3290P,
ATmega48P,
ATmega6450,
ATmega6490,
ATmega8535,
ATmega88P,
ATmega168,
ATmega48,
ATmega88,
ATtiny2313
USART_TXC_vect
SIG_USART_TRANS,
SIG_UART_TRANS
USART, Tx
Complete
ATmega16,
ATmega32,
ATmega323,
ATmega8
USART, Tx
Complete
AT90PWM3,
AT90PWM2,
AT90PWM1,
ATmega168P,
ATmega328P,
ATmega48P,
ATmega8535,
ATmega88P,
ATmega168,
ATmega48,
ATmega88,
ATtiny2313
USART_TX_vect
SIG_USART_TRANS,
SIG_UART_TRANS
AT90PWM3,
AT90PWM2,
AT90PWM1,
ATmega16,
ATmega168P,
ATmega32,
ATmega323,
ATmega3250,
ATmega3250P,
ATmega328P,
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
Page 44 of 50
avr-libc: <avr/interrupt.h>: Interrupts
USART_UDRE_vect
USI_OVERFLOW_vect
USI_OVF_vect
10/19/09 11:32 AM
SIG_USART_DATA,
SIG_UART_DATA
SIG_USI_OVERFLOW
SIG_USI_OVERFLOW
USART Data
Register Empty
USI Overflow
ATmega165,
ATmega165P,
ATmega169,
ATmega169P,
ATmega325,
ATmega3250,
ATmega3250P,
ATmega329,
ATmega3290,
ATmega3290P,
ATmega645,
ATmega6450,
ATmega649,
ATmega6490,
ATtiny2313
USI Overflow
ATtiny26,
ATtiny43U,
ATtiny24, ATtiny44,
ATtiny84, ATtiny45,
ATtiny25, ATtiny85,
ATtiny261,
ATtiny461,
ATtiny861
USI Start
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
ATmega3290,
ATmega3290P,
ATmega48P,
ATmega6450,
ATmega6490,
ATmega8,
ATmega8535,
ATmega88P,
ATmega168,
ATmega48,
ATmega88,
ATtiny2313
ATmega165,
ATmega165P,
ATmega169,
ATmega169P,
ATmega325,
ATmega3250,
ATmega3250P,
ATmega329,
ATmega3290,
ATmega3290P,
Page 45 of 50
avr-libc: <avr/interrupt.h>: Interrupts
10/19/09 11:32 AM
USI_START_vect
SIG_USI_START
USI Start
Condition
USI_STRT_vect
SIG_USI_START
USI Start
ATtiny26
USI_STR_vect
SIG_USI_START
USI START
ATtiny24, ATtiny44,
ATtiny84
WATCHDOG_vect
SIG_WATCHDOG_TIMEOUT
Watchdog
Time-out
ATtiny24, ATtiny44,
ATtiny84
WDT_OVERFLOW_vect
SIG_WATCHDOG_TIMEOUT, Watchdog
ATtiny2313
SIG_WDT_OVERFLOW
Timer Overflow
WDT_vect
Watchdog
SIG_WDT,
Timeout
SIG_WATCHDOG_TIMEOUT
Interrupt
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
ATmega645,
ATmega6450,
ATmega649,
ATmega6490,
ATtiny2313,
ATtiny43U,
ATtiny45, ATtiny25,
ATtiny85,
ATtiny261,
ATtiny461,
ATtiny861
AT90PWM3,
AT90PWM2,
AT90PWM1,
ATmega1284P,
ATmega168P,
ATmega328P,
ATmega32HVB,
ATmega406,
ATmega48P,
ATmega88P,
ATmega168,
ATmega48,
ATmega88,
ATmega640,
ATmega1280,
ATmega1281,
ATmega2560,
ATmega2561,
ATmega324P,
ATmega164P,
ATmega644P,
ATmega644,
ATmega16HVA,
ATtiny13,
ATtiny43U,
ATtiny48, ATtiny45,
Page 46 of 50
avr-libc: <avr/interrupt.h>: Interrupts
10/19/09 11:32 AM
ATtiny25, ATtiny85,
ATtiny261,
ATtiny461,
ATtiny861,
AT90USB162,
AT90USB82,
AT90USB1287,
AT90USB1286,
AT90USB647,
AT90USB646
Define Documentation
#define BADISR_vect
#include <avr/interrupt.h>
This is a vector which is aliased to __vector_default, the vector executed when an ISR fires with no
accompanying ISR handler. This may be used along with the ISR() macro to create a catch-all for undefined
but used ISRs for debugging purposes.
#define cli ( )
#include <avr/interrupt.h>
Disables all interrupts by clearing the global interrupt mask. This function actually compiles into a single
line of assembly, so there is no function call overhead.
#define EMPTY_INTERRUPT ( vector
)
#include <avr/interrupt.h>
Defines an empty interrupt handler function. This will not generate any prolog or epilog code and will only
return from the ISR. Do not define a function body as this will define it for you. Example:
EMPTY_INTERRUPT(ADC_vect);
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
Page 47 of 50
avr-libc: <avr/interrupt.h>: Interrupts
#define ISR ( vector,
attributes
10/19/09 11:32 AM
)
#include <avr/interrupt.h>
Introduces an interrupt handler function (interrupt service routine) that runs with global interrupts initially
disabled by default with no attributes specified.
The attributes are optional and alter the behaviour and resultant generated code of the interrupt routine.
Multiple attributes may be used for a single function, with a space seperating each attribute.
Valid attributes are ISR_BLOCK, ISR_NOBLOCK, ISR_NAKED and ISR_ALIASOF(vect).
vector
must be one of the interrupt vector names that are valid for the particular MCU type.
#define ISR_ALIAS ( vector,
target_vector
)
#include <avr/interrupt.h>
Aliases a given vector to another one in the same manner as the ISR_ALIASOF attribute for the ISR()
macro. Unlike the ISR_ALIASOF attribute macro however, this is compatible for all versions of GCC rather
than just GCC version 4.2 onwards.
Note:
This macro creates a trampoline function for the aliased macro. This will result in a two cycle penalty
for the aliased vector compared to the ISR the vector is aliased to, due to the JMP/RJMP opcode used.
Deprecated:
For new code, the use of ISR(..., ISR_ALIASOF(...)) is recommended.
Example:
ISR(INT0_vect)
{
PORTB = 42;
}
ISR_ALIAS(INT1_vect, INT0_vect);
#define ISR_ALIASOF ( target_vector
)
#include <avr/interrupt.h>
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
Page 48 of 50
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The ISR is linked to another ISR, specified by the vect parameter. This is compatible with GCC 4.2 and
greater only.
Use this attribute in the attributes parameter of the ISR macro.
#define ISR_BLOCK
# include <avr/interrupt.h>
Identical to an ISR with no attributes specified. Global interrupts are initially disabled by the AVR hardware
when entering the ISR, without the compiler modifying this state.
Use this attribute in the attributes parameter of the ISR macro.
#define ISR_NAKED
# include <avr/interrupt.h>
ISR is created with no prologue or epilogue code. The user code is responsible for preservation of the
machine state including the SREG register, as well as placing a reti() at the end of the interrupt routine.
Use this attribute in the attributes parameter of the ISR macro.
#define ISR_NOBLOCK
# include <avr/interrupt.h>
ISR runs with global interrupts initially enabled. The interrupt enable flag is activated by the compiler as
early as possible within the ISR to ensure minimal processing delay for nested interrupts.
This may be used to create nested ISRs, however care should be taken to avoid stack overflows, or to avoid
infinitely entering the ISR for those cases where the AVR hardware does not clear the respective interrupt
flag before entering the ISR.
Use this attribute in the attributes parameter of the ISR macro.
#define reti ( )
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
Page 49 of 50
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#include <avr/interrupt.h>
Returns from an interrupt routine, enabling global interrupts. This should be the last command executed
before leaving an ISR defined with the ISR_NAKED attribute.
This macro actually compiles into a single line of assembly, so there is no function call overhead.
#define sei ( )
#include <avr/interrupt.h>
Enables interrupts by setting the global interrupt mask. This function actually compiles into a single line of
assembly, so there is no function call overhead.
#define SIGNAL ( vector
)
#include <avr/interrupt.h>
Introduces an interrupt handler function that runs with global interrupts initially disabled.
This is the same as the ISR macro without optional attributes.
Deprecated:
Do not use SIGNAL() in new code. Use ISR() instead.
Automatically generated by Doxygen 1.5.7 on 5 Mar 2009.
http://www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html
Page 50 of 50